981680742443 has 8 divisors (see below), whose sum is σ = 1033427880000. Its totient is φ = 929941577928.

The previous prime is 981680742421. The next prime is 981680742473. The reversal of 981680742443 is 344247086189.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981680742443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981680742403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739693 + ... + 2233806.

It is an arithmetic number, because the mean of its divisors is an integer number (129178485000).

Almost surely, 2^981680742443 is an apocalyptic number.

981680742443 is a deficient number, since it is larger than the sum of its proper divisors (51747137557).

981680742443 is a wasteful number, since it uses less digits than its factorization.

981680742443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986521.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 981680742443 in words is "nine hundred eighty-one billion, six hundred eighty million, seven hundred forty-two thousand, four hundred forty-three".